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This method does not follow proper javascript syntax...
According to this video http://www.youtube.com/watch?v=hQVTIJBZook at 32:20 by Doug Crockford (expert in javascript)
having the curly brace on the following line can cause problems
Your Javascript
String.protoype.trim = function () { return this .replace (/^\s+/,"") .replace (/\s+$/,""); }
My Javascript
String.protoype.trim = function (){ return this .replace (/^\s+/,"") .replace (/\s+$/,""); }